Locomotive bed



1925 '2 Sheets-Sheet 1 of, Q

` H.- M. PFLAGER'ET AL 4 Loco'Mo'IfIvE BED Eiled Dec@ July 20 1926.'

Patented July 20, 1,926.

UNITED STATESPATENI oF'Fici-i,

yIEIAEEY M. PELAGEE AND JAMEs o. TRAVILLA, JR., or s'r. Louis,`MISSOURI, Asf SIGNOR-s To COMMONWEALTH s'rEEL coMPAiIz, or sfr. LoUIs,MIssoUEI, A oon- PORATION F NEW' JERSEY. y

LocoMo'rIvE EED.v

Application led December 7, 1925. Serla1'No.,73,6Q8.

,Our invention relatesjto railway rolling stock and consists in animproved locomotive bed or frame structure.

The main object of our invention is. to

provide a locomotive bed possessing a high degree of rigidity anddurability without any undue increase lof material and weight.Preferably this improved bed consists in a one-piece casting having anumber of parts formed integrally .which have hitherto been added to theframe separately. We vare aware that it has been suggested previous-4 lythat frames of this type be formed of a one-piece casting and such aframe 1s described in the copending application of H. M. Pflager, one ofthe parties hereto, Serial Number 753,277 filed December 11, 1924,patented December 22, 1925, No. 1,566,423. However, there have beeninstances in the 2 manufacture of one-piece frames of great length,which while the same would possess sufficient strength to carry theirnormal load and to withstand such buiing and pulling stresses as areencountered in normal use, they would not always withstand being liftedby crane chains or similar means attached to their. ends only, and anobject of our present invention is to so form the frame that thisweakness may be overcome. i0 Briey, we attain these objects by makingthe frame box-shape in cross section with the outer walls of the boxforming the outer sides of the frame and extending in a straight linefrom the front end of the 85 yframe to therear end of the cradle.

In the accompanying drawings illustrating a selected embodiment of ourinvention- Figure 1 is in part a top view and in part a longitudinalhorizontal section taken on line 1 1 of Figure 2.

Figure 2 is a vertical longitudinal seotion taken on line 2 2 of Figure1.

Figure 3 is a side elevation of the frame,

with the driving wheels indicated in broken lines.

' Figures 4, 5, 6, and 7 are sections taken, respectively, on lines 4 4,5 5, 6 6, and 7 7 of Figure 1, Figure 7 also showing a driving axle andwheel with its box, spring saddle and spring support.

The main frame or bed comprises side -frames 1` top walls 2, and bottomwalls 3 which form a boX section substantially throughout the length ofthe frame. At in tervals suitable openings are provided in each of thesewalls to lighten the same without unduly reducing the strength'thereof.It will be noted that the side walls'l ex.' tend rearwardly beyond theend of the bed proper to form the cradle portion of the frame and areunited at their rear ends ,with ,transverse elements forming the footplate .4, drawbar pocket 5, and corresponding parts.

At each of the driving axles, the height of the side walls is greatlyreduced but to' compensate therefor the, walls are thickened at thesepoints as indicated-at 6 and the side walls 1 are supplemented byadditional longitudinal vertical walls 7 lparallel with y70 'and spacedinwardly from the side walls and cooperating. therewith to form thepedestal portions of the bed. 4

At these portions of the bed, the upper and lower walls of the same areprovided 76 with vertical openings adjacent inner wall 7, each ofwhichopenings is adapted to receive one leg of an inverted U-shaped springsaddle 8 which straddles the side of the bed and is carried on thedrivingv box 9. This 80 arrangement increases the clearance between thedriving wheels l() and the frame and as there is no portion of the framebetween the wheels and the springs 11 the application and inspection ofthe latter are facilitated.

In the structure just described, we prefer to provide integral equalizerfulcrums 12, brake hanger brackets 22, equalizer hanger, lugs 13, boilersupport brackets 14, cylinder brackets 15, and boiler saddles 16. These'90 and various other elements which are usu-y ally formed separately andassembled withv Y the frame maybe cast at the same time as the body ofthe frame and the labor and material necessary for assembly is elimi`95nated. This construction has theadditional advantage of maintaining therigidity of the parts and their spacing from each other" which cannot berelied upon when the parts are riveted or bolted together.

Transverse partitions or walls are provided onLv the interior of thebox-shaped frame at 17 and serve to reinforce the side walls 1 and thesupplementary walls 7.

Uther transverse partitions 18 are provided betweentlie ends of thesupplementary walls 7 and serve to brace the side walls at suchA points.

yObviously these .and other details of our invention may be modifiedorevfen eliminated without departing from the broad idea of thebox-shaped bed having the characteristics referred to. It will be notedthat the construction described eliminates any y offsets in the sidewall ofthe frame, thereby reducing the stresses due tol theeccentricities of buiiing loads.

Another type of boxshape underframe is shown in the copendingapplication of H. M. PlagerSerial No. 71,640 filed November 27, 1925,and in this application, as well as in the Pflager patent referred to inthe first part of the specification, it is proposed to form the steamcylinders and supply chests integrally with the side of the frame. Itwill be understood that a similar arrangement of the steam cylinders andsupply chests could be provided on the present frame although such isnot. illustrated 'in the drawings, the latter showing the forward endsof the frame adapted to mount detachable cylinders in the usiial manner.

Various other modifications in the structure described may be madewithout departing from the spirit of our invention as expressed in theclaims. We claim:

1. A locomotive bedY of box cross section with its side wallssubstantially straight from end to end.

2. A locomotive bed, including an integral cradle, said bed and cradleeach being of box-shape cross section with their respective side wallsaligned and extending in a substantially straight line from the frontend of the frame to the rear end of the cradle.

3. A locomotive bed of box cross section with inner vertical wallsspaced from and paralleling its outer walls and cooperating therewith toform pedestals for the locomotive .driving boxes.

4. A locomotive bed of box cross section with inner vertical wallsspaced from and paralleling its outer walls2 and transverse verticalwalls connectin sai'd inner walls on opposite sides of the belgi.

5. A locomotive bed of box cross section with inner vertical walls atintervals spaced from and paralleling its outer walls, and transversevertical walls connecting said side walls between the ends of said innerwalls.

6. A locomotive bed of box cross section with inner vertical walls atintervals spaced from and paralleling its outer walls, transversevertical walls connecting said inner walls on opposite sides of the bed,and transverse vertical walls connecting said outer walls between theends of said inner walls.

7. A one-piece casting comprising a locomotive bed box shape in crosssection with each side wallextending in a straight line from end to end.

8. A one-piece casting comprising a locomotive bed box shape in crosssection with each side wall extending in a straight line from end to endand with supplementary vertical walls parallel with and spaced inwardlyfrom said side walls.

9. A one-piece casting comprising a locomotive bed box shape in crossction with each side wall extending in a straight line from end to endand with sup lementary vverticalwalls at intervals para ieling andspaced inwardly from said side walls, and transverse vertical wallsconnecting said side walls between said sup lementary walls.

10. In a locomotive, a d of box cross section with it-s side wallssubstantially straight from end to endl and overlying `the drivingboxes.

11. .Iii a locomotive, a bed having a side wall and a sprin saddlestraddlingsaid side wall and provi ed with a spring bearing surface.

12. In a locomotive, a bed box shape iii cross section with a side walloverlying a driving box, there being an opening in the top and bottomwall of the bed near its side wall, and a sprin saddle straddling saidside wall with its inner leg extending tlirou h said opening.

13. n a locomotive, a bed box shape in cross section with a side wallreduced in depthY at intervals to provide openings for the drivingboxes, there being openings in the top and bottom walls of the bedadjacent said reduced portion of the side wall, and spring saddleseachstraddling said side wall with its inner leg projectin through saidopenings to a point below the ttom of the reduced portion of the sidewall.

14. In a locomotive, a bed box shape in cross section with a side walloverlying a drivin box, there being an o ning in the top an bottom wallof the be near its side wall, a spring saddle straddling said side wallwith its inner leg extending through said opening, and a vertical wallon said bed paralleling and spaced inwardly from l said side walladjacent to said saddle.

15. In a'locomotive, a bed of box cross section with its ,side wallssubstantially straight from end to end and overlying the drivin boxes,and equalizer lcrums forme integrally with said walls between thedriving boxes.

16. In a locomotive, a bed. of box cross vsection with its side wallssubstantially ias inol

Leeeeee A f "a 17. In a locomotive, a bed of box cross member at itsforward end and e cradle side section with its side walls substantiallymember at its real" end. straight from end to end and overlying the 19.In a locomotive, a journel box', an inl5 driving boxes, and equalizerfulcrums verted U-shepedv member resting on said formed integrally onthe inside of said box, a spring mounted on ,said member, and

walls between the drivingboxes and brake e bedfsupported by said springand extendf hanger fulorums formed integrally on the ing through saidU-shapedmember. Q outside ef said walls between driving boxes. Intestimony whereof we hereunto aflx 20 18. A locomotive bed, box-shape incross our signatures this 27 day of November, 1925.

10 section with each sidewall extending substantially in a straight linefrom end to H. M. PFLAGER. end and forming e steam cylinder mountingJAS. C. TRAVILLA, JR.

